Optical Imaging
    1.
    发明申请
    Optical Imaging 审中-公开
    光学成像

    公开(公告)号:US20080230715A1

    公开(公告)日:2008-09-25

    申请号:US11997417

    申请日:2006-07-25

    IPC分类号: G01J1/58

    CPC分类号: A61B5/0059 A61B5/05

    摘要: An optical imaging apparatus (100) for examination of an object of interest (101), the optical imaging apparatus (100) comprising an optical radiation source (102) adapted to emit a primary optical radiation beam onto the object of interest (101), an optical radiation detector (106) adapted to detect a secondary optical radiation beam emitted by the object of interest (101) upon absorbing the primary optical radiation beam, a magnetic field generating element (107) adapted to generate an inhomogeneous magnetic field varying along an extension of the object of interest (101), and a determination unit (108) adapted to determine information concerning the object of interest (101) based on an analysis of the detected secondary optical radiation beam in combination with an analysis of the inhomogeneous magnetic field.

    摘要翻译: 一种用于检查感兴趣物体(101)的光学成像设备(100),所述光学成像设备(100)包括适于将主要光辐射束发射到感兴趣对象(101)上的光辐射源(102) 适于在吸收主光辐射束时检测由感兴趣物体(101)发射的次级光辐射束的光学辐射检测器(106),适于产生沿着所述第一光辐射束变化的非均匀磁场的磁场产生元件(107) 感兴趣对象的扩展(101),以及确定单元(108),其适于基于对所检测到的次级光辐射束的分析来确定与感兴趣对象(101)有关的信息,以及非均匀磁场的分析 。

    Electro-Optical Magnetic Resonance Transducer
    3.
    发明申请
    Electro-Optical Magnetic Resonance Transducer 审中-公开
    电光磁共振传感器

    公开(公告)号:US20070229080A1

    公开(公告)日:2007-10-04

    申请号:US11568125

    申请日:2005-03-30

    IPC分类号: G01R33/465 A61B5/05

    摘要: A receive coil (46, 46′, 46″) receiving a magnetic resonance signal includes an optical resonant cavity (82, 82′, 82″) having an electro-optically active medium (90, 90′, 90″). A radio frequency antenna (80, 80′, 80″) is coupled with the electro-optically active medium such that reception of the magnetic resonance signal by the radio frequency antenna modulates an optical characteristic of the optical resonant cavity. An interventional instrument (48) is adapted for partial insertion into an associated imaging subject (16). The radio frequency antenna and the optical resonant cavity are disposed on a portion of the interventional instrument that is inserted into the associated imaging subject. At least one optical fiber (52, 54) is optically coupled with the optical resonant cavity. An end of the at least one optical fiber extends outside of the associated imaging subject when the interventional instrument is partially inserted.

    摘要翻译: 接收磁共振信号的接收线圈(46,46',46“)包括具有电光活性介质(90,90',90”)的光学谐振腔(82,82',82“), 。 射频天线(80,80',80“)与电光活性介质耦合,使得由射频天线接收磁共振信号调制光谐振腔的光学特性。 介入器械(48)适于部分地插入到相关联的成像对象(16)中。 无线电频率天线和光学谐振腔被布置在插入到相关联的成像对象中的介入仪器的一部分上。 至少一个光纤(52,54)与光学谐振腔光学耦合。 当介入器械被部分地插入时,至少一个光纤的一端延伸到相关的成像对象的外部。

    Method of characterizing
    5.
    发明授权
    Method of characterizing 有权
    表征方法

    公开(公告)号:US09575146B2

    公开(公告)日:2017-02-21

    申请号:US13882293

    申请日:2011-10-26

    摘要: The invention relates to a method of characterizing the RF transmit chain of a magnetic resonance imaging scanner (1) using a local transmit/receive coil system (204; 210), comprising a first local NMR probe and a first local magnetic resonance coil, the first NMR probe being spatially located in immediate neighborhood to the first coil, a local receive coil system (206; 208), comprising a second local NMR probe and a second local magnetic resonance coil, the second NMR probe being spatially located in immediate neighborhood to the second coil, wherein the transmit chain comprises an external MR coil (9; 11; 12; 13), the method comprising: determining with the first magnetic resonance coil, a first MR signal phase evolution of the local RF transmit field generated by MR excitation of the first probe using the first magnetic resonance coil by measuring the RF response of the first probe upon said excitation, determining with the second magnetic resonance coil a second MR signal phase evolution of the local RF transmit field generated by MR excitation of the second probe using the external MR coil (9; 11; 12; 13) by measuring the RF response of the second probe upon said excitation, calculating a phase offset between the first and second MR signal phase evolution.

    摘要翻译: 本发明涉及一种使用本地发射/接收线圈系统(204; 210)来表征磁共振成像扫描仪(1)的RF发射链的方法,该系统包括第一局部NMR探针和第一局部磁共振线圈, 空间上位于第一线圈周围的第一NMR探针,包括第二局部NMR探针和第二局部磁共振线圈的局部接收线圈系统(206; 208),所述第二NMR探针在空间上位于紧邻附近 所述第二线圈,其中所述发射链包括外部MR线圈(9; 11; 12; 13),所述方法包括:利用所述第一磁共振线圈确定由MR产生的所述本地RF发射场的第一MR信号相位演变 通过在所述激发时测量第一探针的RF响应,使用第一磁共振线圈激发第一探针,用第二磁共振线圈确定第二MR信号相位ev 使用外部MR线圈(9; 9)对第二探针的MR激发产生的局部RF发射场的清零。 11; 12; 13)通过在所述激励时测量第二探针的RF响应,计算第一和第二MR信号相位演变之间的相位偏移。

    Interventional or non-interventional instrument for use in an MRI apparatus
    7.
    发明授权
    Interventional or non-interventional instrument for use in an MRI apparatus 有权
    用于MRI装置的介入或非介入性仪器

    公开(公告)号:US09348005B2

    公开(公告)日:2016-05-24

    申请号:US14240602

    申请日:2012-08-29

    摘要: An interventional or a non-interventional instrument like a catheter, a surgical device, a biopsy needle, a pointer, a stent or another invasive or non-invasive device, like a position marker, or a surface or local coil like a head coil is disclosed, wherein these instruments are provided with an MR-safe RF transmission line or cable (2, 3) for connecting the instrument with related RF transmit/MR receive units or other signal processing units for operating the instrument during an MR imaging or MR examination of an examination object. Basically, MR safety is obtained or increased by means of a plurality of fuses (6) which are serially connected into the transmission line or cable (2, 3).

    摘要翻译: 诸如导管,手术装置,活检针,指针,支架或另一侵入性或非侵入性装置(例如位置标记)或诸如头部线圈的表面或局部线圈的介入或非介入手段是 公开了这些仪器,其中这些仪器设置有用于在MR成像或MR检查期间将仪器与相关的RF发射/ MR接收单元或其他信号处理单元连接以用于操作仪器的MR安全RF传输线或电缆(2,3) 的考试对象。 基本上,通过串联连接到传输线或电缆(2,3)中的多个保险丝(6)获得或增加了MR安全性。

    COMPOSITE FIBER GUIDEWIRES
    9.
    发明申请
    COMPOSITE FIBER GUIDEWIRES 审中-公开
    复合纤维指南

    公开(公告)号:US20140121648A1

    公开(公告)日:2014-05-01

    申请号:US14125737

    申请日:2012-06-11

    申请人: Steffen Weiss

    发明人: Steffen Weiss

    IPC分类号: A61M25/09 B29C70/52

    摘要: A guide wire (400, 500, 600, 700, 800, 900, 1000, 1200, 1300) is adapted for use in magnetic resonance imaging systems. The guide wire has a shaft region (402) and a distal tip region (404). The shaft region comprises a composite shaft (406) comprising reinforcing fibers aligned with a length extension (403) of the shaft region. The fibers extend at least partially into the distal tip region. The fibers form a taper (410) within the distal tip region. The distal tip region comprises a sensor (504, 604, 702, 704, 804, 904, 1006, 1008). The shaft comprises a cable (502, 602, 702, 704, 802, 902, 1002, 1004). The cable is connected to the sensor.

    摘要翻译: 引导线(400,500,600,700,800,900,1000,1200,1300)适用于磁共振成像系统。 引导线具有轴区域(402)和远端尖端区域(404)。 轴区域包括复合轴(406),其包括与轴区域的长度延伸部(403)对准的增强纤维。 纤维至少部分延伸到远侧末端区域。 纤维在远端尖端区域内形成锥形(410)。 远端尖端区域包括传感器(504,604,702,704,804,904,1006,1008)。 轴包括电缆(502,602,702,704,802,902,1002,1004)。 电缆连接到传感器。

    MAGNETIC RESONANCE GUIDANCE OF A SHAFT TO A TARGET ZONE
    10.
    发明申请
    MAGNETIC RESONANCE GUIDANCE OF A SHAFT TO A TARGET ZONE 有权
    对目标区域的磁共振指导

    公开(公告)号:US20140018664A1

    公开(公告)日:2014-01-16

    申请号:US14007990

    申请日:2012-04-04

    IPC分类号: A61B5/055 A61B5/00 A61B5/06

    摘要: A medical apparatus (1100) comprising a magnetic resonance imaging system and an interventional device (300) comprising a shaft (302, 1014, 1120). The medical apparatus further comprises a toroidal magnetic resonance fiducial marker (306, 600, 800, 900, 1000, 1122) attached to the shaft. The shaft passes through a center point (610, 810, 908, 1006) of the fiducial marker. The medical apparatus further comprises machine executable instructions (1150, 1152, 1154, 1156, 1158) for execution by a processor. The instructions cause the processor to acquire (100, 200) magnetic resonance data, to reconstruct (102, 202) a magnetic resonance image (1142), and to receive (104, 204) the selection of a target volume (1118, 1144, 1168). The instructions further cause the processor to repeatedly: acquire (106, 206) magnetic resonance location data (1146) from the fiducial marker and render (108, 212) a view (1148, 1162) indicating the position of the shaft relative to the target zone.

    摘要翻译: 一种包括磁共振成像系统和包括轴(302,1014,1120)的介入装置(300)的医疗装置(1100)。 医疗装置还包括连接到轴的环形磁共振基准标记(306,600,800,900,1000,1122)。 轴通过基准标记的中心点(610,810,908,1006)。 医疗设备还包括用于由处理器执行的机器可执行指令(1150,1152,1154,1156,1158)。 所述指令使得所述处理器获取(100,200)磁共振数据,以重建(102,202)磁共振图像(1142),并且接收(104,204)所述目标体积(1118,1144, 1168)。 所述指令还使所述处理器重复地:从所述基准标记获取(106,206)磁共振位置数据(1146),并且渲染(108,212)指示所述轴相对于所述目标的位置的视图(1148,1162) 区。